Copying device.



L. GRUBMAN. 1 comm: DEVICE. i- 1 APPLICATION FILED 026.2. 1914.

1,212,938. Patented Jan.16,1917.

vwmws E8 L G- b mmvrof I 5 9 e0 ru mc1n iii UNITED STATES PATENT OFFICE.

LEO GRUBMAN, OF BROOKLYN, NEW YORK, ASSIGNOR 0F ONE-HALF T0 JOSEPHSTEIN, OF NEW YORK, N. Y.

COPYING nnvrcn.

Specification of Letters Patent.

Patented Jan. 16, 1917.

To all whom it may concern:

Be it known that I, LEO GRUBMIAN, a citizen of the United States, and aresident of the city of New York, borough of Brooklyn, in the county ofKings and State of New York, have invented a new and Improved CopyingDevice, of which the following is a full, clear, and exact description.

My invention relates to devices for copying drawings and has referencemore particularly to a device for producing copies of drawings orsketches by reflecting the said sketches or drawings through atransparent colored medium on to matter on which the copy is to beformed.

An object of the invention is to provide a simple, convenient andinexpensive device which will reflect clearly the sketch or drawing tobe copied.

A further object of the invention is to provide a device which is in theshape of a portfolio and in which the reflecting medium is maintained inthe proper position automatically.

With the above and other objects in View, the nature of which will morefully appear as the description proceeds, the invention consists in thenovel construction, combination and arrangement of parts as herein fullydescribed, illustrated and claimed.

In the accompanying drawings, forming part of the application, similarcharacters of reference indicate corresponding parts in all the views,and Figure 1 is a perspective view of an embodiment of my invention;Fig. 2 is a plan view thereof showing the support for the transparentmedium in full line slightly withdrawn, and in dotted lines nearlyfolded against the transparent medium before the portfolio is closed.Fig. 3 shows the device closed; Fig. 4 is a section on line 4-4, Fig.3-, and Fig. 5 is a diagrammatic view of a modified structure of mydevice.

Referring to the drawings, 5 represents a folder the sides of which arestiffened by securing to the folder pads 6 spaced from each other by thefold in the folder and which pads are provided with corners 7 forengaging paper. Secured to the folder and mounted to fold between thepads is a transparent colored medium 8; preferably a suitably coloredpane of glass is used. To maintain the transparent colored medium erectwhen the folder is open, a foldable support 9 is provided. The saidsupport is connected to the transparent medium so as to fold, preferablyto one side thereof. The support 9 is also provided with a foldabletongue 10 which is made to fit between the folder and one of the pads 6.lVhen the tongue is so engaged, the transparent colored medium 8 will bein an erect position. To close the folder. the tongue 10 must bedisengaged from the pad and folder and folded against the support andthe support moved against the transparent medium, when the folder can beclosed by either moving the folder toward the transparent medium or thetransparent medium toward either of the pads and covering the same withthe other pad. To form a perfect closure the folder 5 is provided with afolda-ble extension 11 adapted to overlap the other end of the folderwhen the same is closed. The said extension 11 is provided with a tongue12 adapted to engage a slit 13 formed in the folder, whereby said folderis prevented from accidental unfolding. The said matter to be copied maybe placed on either of the pads 6, but preferably it is placed on thepad 6 which is engaged with the support 9. The other pad receives thematter on which the copy is to be produced. The light is made to strikethe side of the transparent colored medium which faces the subjectmatter to be copied. Particular attention is called to the fact that bythe use of a colored medium the clearness of the subject matter to becopied is greatly increased as compared with an ordinary colorlesstransparent medium.

In Fig. 5 a modified structure is shown, in which the transparent mediumis connected to the ends of the folder or the pads remote from thetransparent medium by flexible members 14 which will automatically erectthe transparent medium when the folder is unfolded. It is self-evidentthat the transparent medium will automatically fold into the folder whenthe folder is closed.

From the foregoing description, taken in connection with theaccompanying drawings, the advantage of the construction and operationof the device shown will be readily understood by those skilled in theart to which the invention pertains, and while I have described theprinciple of operation, together with the device which I now consider tobe the best embodiment thereof, I

desire to have it understood that the device shown is merelyillustrative and that such changes may be made when desired as arewithin the scope of the appended claims.

Having thus described my invention, I claim as new and desire to secureby Letters Patent:

1. A support and a colored transparent medium adapted to be held atright angles to said support, said support being adapted to receive uponone side of said medium the object to be copied and upon the other sideof said medium the material upon which the copy is to be made.

2. In a copying device of the class described, a folder, padsreinforcing the sides of said folder, a transparent medium foldablymounted between the pads on said folder, and means for maintaining saidtransparent medium erect when said folder is unfolded, substantially asand for the purpose set forth.

3. In 3. copying device of the class described, a folder, padsreinforcing the sides of the folder, a transparent medium foldablysecured to said folder between said pads, a support in foldableconnection with said transparent medium, and a foldable tongue on saidsupport adapted to engage between said folder and one of the padswhereby the transparent medium is maintained in upright position withreference to said folder when the same is open, said folder having meansfor preventing an accidental folding of said folder when the same isunfolded.

4. In a copying device of the class described, a foldable support, atransparent medium foldably mounted in the fold of the support, andmeans having a portion engageable between the support and one of saidpads for maintaining said transparent medium in erect position when saidsupport is unfolded.

5. In a copying device of the class described, a foldable support, atransparent medium, foldable means between said transparent medium andsaid foldable support and foldable along the side thereof or movcopiesof this patent may be obtained for five cents each, by addressing theCommissioner of Patents, Washington, D. 0.

